Hi, I've had a bit of a problem identifying what is wrong with some of my fish since returning from holiday to discover that the girl from the local pet shop who I paid to do water changes/cleaning did such a bad job that one of my filters had stopped due to clogging and the tank was green despite a UV filter being used.
Anyways, I'll describe what is happening, what I've done so far and would like to know what you think. Firstly, I do 20% water changes twice a week so water parameters are now good. The water also tested as really soft and acidic 3 weeks ago but is now pH 6.8-7 with a water hardness of 4 which is hopefully still slowly rising due to an oyster shell bag in the filter.
The fish which are having probs are:
Danios - one can't keep upright while swimming about and one dead this morning.
Quite a few fish - Danios, rasboras, platies, black neons seem to have a greyish film over their bodies and are a bit jittery.
Neons - have a few white bubbly growths on either their fins or mouth.
Blackline flying fox - a grey mouldy looking patch on his side.
A few platies sucking near surface with top fin clamped and tail facing down.
Loaches, pleco & corys seem fine.
Fish are in a planted 180 rio tank.
Temp was at 27-28 degrees until last week, now at 25.
Have tried a few doses of acriflavine, some melafix, primafix and aquapet antibacterial drops. Also put fox, platies into a salt bath yesterday. Done lots of reading but can't decide what to use which will actually work without harming loaches and catfish. Any ideas appreciated!